v2025.0.0 - 17th Jan 2025

Physics

• Adaptive Particle Refinement implemented in phantom (Nealon & Price 2025; #595)
• 4th order Forward Symplectic Integrator now used by default instead of Leapfrog for sink particles and gravitational dynamics (thanks to Yann Bernard; #523, #539, #564, #601)
• Regularisation and slow down methods implemented for sink-sink interactions (thanks to Yann Bernard; #536, #583)
• New star cluster formation prescription drawing from initial mass function (thanks to Yann Bernard; #548, #577)
• New prescription for stellar feedback due to HII region expansion (thanks to Yann Bernard; #577)
• New porosity evolution module for dust growth (Michoulier, Gonzalez & Price 2024; #526)
• Added surface force on sink particles from Ayliffe & Bate 2010 (thanks to Rebecca Martin, #568)
• Added tracking/accounting of accreted energy (i.e. negative energy removed by deleting particles) to .ev file (#552)
• New injection module for infall-driven self gravitating discs (thanks to Cristiano Longarini; #553, #554)
• Ability to use tabulated metric independently of Einstein Toolkit (thanks to David Bamba; #572)
• Updated coupling between Phantom and KROME (thanks to Mats Esseldeurs; #510)
• Tillotson equation of state for asteroids and other solar system bodies (thanks to Amber Tilly; #609)
• ability to use sink particles in GR (thanks to Megha Sharma; #608)
• Bug fix with exact cooling integration scheme (thanks to Chris Russell; #585, #588)
• Bug fix with very slow simulations due to sink particles failing to accrete (thanks to Chris Russell and Yann Bernard; #588, #589)
• Bug fix with timestep controls in MHD causing unnecessarily short time steps (thanks to Hugh Griffiths; #537)
• Bug fixes and better tests added for sink particles in external potentials, Chinese coin problem from Phantom paper now run automatically in the testsuite (#535)
• Bug fixes with iorig array used to track unique particle IDs (thanks to Mats Esseldeurs; #509)
• Bug fix with corotating frame (thanks to Mike Lau; #563, #562)
• Bug fix with calculation of gamma in dust nucleation (thanks to Lionel Siess; #533)
• Bug fix with failure to converge on density after splitting a dump (thanks to Christophe Pinte; #517)

Setup

• can now enter star and orbital quantities in .setup file in arbitrary units (#600)
• improved/more robust reading of MESA data files for setting up stars (thanks to Ryosuke Hirai; #605, #607)
• new setup for mass transfer simulations (thanks to Ana Juarez; #561)
• improved windtunnel setup (thanks to Mike Lau; #597)
• improved setup for discs around black holes (SETUP=grdisc), with ability to add sink particles/stars on arbitrary orbits around the black hole (#545)
• issues with grdisc setup fixed (thanks to Ariel Chitan; #571)
• improved solar system setup (SETUP=solarsystem), including new add_body routine to add solar system bodies individually (#609)
• bug fixes and improvements in set_star routines (with thanks to Mike Lau; #495, #592, #596)
• SETUP=asteroidwind is now randomwind, can input Mdot in either g/s or Msun/yr (thanks to Rebecca Nealon, Madeline Overton and Shunquan Huang; #463, #566, #578)
• setup and link against KROME library is now checked in github actions workflow (#489)

Analysis/moddump utilities

• new moddump to inject particles from one simulation into another (Hu et al. 2025, submitted; #503)
• various updates to common envelope analysis module (thanks to Mike Lau; #541, #591)
• new moddump that converts a non-radiative dump to a radiative dump (#525)
• updated analysis module for analysing self-gravitating disc stresses (thanks to Cristiano Longarini; #556)

Other

• SYSTEM=ifx option for compiling with new intel compiler (thanks to Lionel Siess; #559)
• all required datafiles now permanently archived and automatically downloaded from Zenodo, rather than a personal web page (#580)
• better testing of all equations of state in the test suite (#528)
• use isink=1 by default if isink is not already set when using ieos=6 / locally isothermal centred on sink (thanks to Kateryna Andrych)
• better testing of options in star setups, testsuite now automatically checks all values of iprofile
• compatibility issues with Shamrock fixed (#518)
• better documentation on stellar relaxation (thanks to Chunliang Mu; #504)
• issue with software license fixed (#473)
• improved documentation on how to archive your data